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1.10 ! millert 1: /* $OpenBSD: top.c,v 1.9 2001/07/27 17:13:42 deraadt Exp $ */
1.1 downsj 2:
1.2 downsj 3: const char copyright[] = "Copyright (c) 1984 through 1996, William LeFebvre";
1.1 downsj 4:
5: /*
6: * Top users/processes display for Unix
7: * Version 3
8: *
9: * This program may be freely redistributed,
10: * but this entire comment MUST remain intact.
11: *
12: * Copyright (c) 1984, 1989, William LeFebvre, Rice University
13: * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University
14: */
15:
16: /*
17: * See the file "Changes" for information on version-to-version changes.
18: */
19:
20: /*
21: * This file contains "main" and other high-level routines.
22: */
23:
24: /*
25: * The following preprocessor variables, when defined, are used to
26: * distinguish between different Unix implementations:
27: *
28: * FD_SET - macros FD_SET and FD_ZERO are used when defined
29: */
30:
1.2 downsj 31: #include <sys/types.h>
32: #include <stdio.h>
33: #include <ctype.h>
1.1 downsj 34: #include <signal.h>
35: #include <setjmp.h>
1.2 downsj 36: #include <string.h>
37: #include <stdlib.h>
38: #include <unistd.h>
1.5 deraadt 39: #include <errno.h>
1.1 downsj 40: #include <sys/time.h>
41:
42: /* includes specific to top */
43: #include "display.h" /* interface to display package */
44: #include "screen.h" /* interface to screen package */
45: #include "top.h"
46: #include "top.local.h"
47: #include "boolean.h"
48: #include "machine.h"
49: #include "utils.h"
50:
51: /* Size of the stdio buffer given to stdout */
52: #define Buffersize 2048
53:
54: /* The buffer that stdio will use */
55: char stdoutbuf[Buffersize];
56:
57: /* imported from screen.c */
58: extern int overstrike;
59:
60: /* signal handling routines */
1.2 downsj 61: static void leave __P((int));
62: static void onalrm __P((int));
63: static void tstop __P((int));
1.1 downsj 64: #ifdef SIGWINCH
1.2 downsj 65: static void winch __P((int));
1.1 downsj 66: #endif
67:
1.7 deraadt 68: sig_atomic_t leaveflag;
69: sig_atomic_t tstopflag;
70: sig_atomic_t winchflag;
71:
1.2 downsj 72: static void reset_display __P((void));
1.1 downsj 73:
74: /* values which need to be accessed by signal handlers */
75: static int max_topn; /* maximum displayable processes */
76:
77: /* miscellaneous things */
78: char *myname = "top";
79: jmp_buf jmp_int;
80:
81: /* routines that don't return int */
82:
83: #ifdef ORDER
84: extern int (*proc_compares[])();
85: #else
86: extern int proc_compare();
87: #endif
88: time_t time();
89:
90: caddr_t get_process_info();
91:
92: /* pointers to display routines */
1.2 downsj 93: void (*d_loadave)() = i_loadave;
94: void (*d_procstates)() = i_procstates;
95: void (*d_cpustates)() = i_cpustates;
96: void (*d_memory)() = i_memory;
97: void (*d_message)() = i_message;
98: void (*d_header)() = i_header;
99: void (*d_process)() = i_process;
1.1 downsj 100:
101:
1.2 downsj 102: int main(argc, argv)
1.1 downsj 103:
104: int argc;
105: char *argv[];
106:
107: {
108: register int i;
109: register int active_procs;
110: register int change;
111:
112: struct system_info system_info;
113: struct statics statics;
114: caddr_t processes;
115:
116: static char tempbuf1[50];
117: static char tempbuf2[50];
1.10 ! millert 118: sigset_t mask, oldmask;
1.1 downsj 119: int topn = Default_TOPN;
120: int delay = Default_DELAY;
121: int displays = 0; /* indicates unspecified */
122: time_t curr_time;
123: char *(*get_userid)() = username;
124: char *uname_field = "USERNAME";
125: char *header_text;
126: char *env_top;
127: char **preset_argv;
128: int preset_argc = 0;
129: char **av;
130: int ac;
131: char dostates = No;
132: char do_unames = Yes;
133: char interactive = Maybe;
134: char warnings = 0;
135: #if Default_TOPN == Infinity
136: char topn_specified = No;
137: #endif
138: char ch;
139: char *iptr;
140: char no_command = 1;
141: struct timeval timeout;
142: struct process_select ps;
143: #ifdef ORDER
144: char *order_name = NULL;
145: int order_index = 0;
146: #endif
147: #ifndef FD_SET
148: /* FD_SET and friends are not present: fake it */
149: typedef int fd_set;
150: #define FD_ZERO(x) (*(x) = 0)
151: #define FD_SET(f, x) (*(x) = f)
152: #endif
153: fd_set readfds;
154:
155: #ifdef ORDER
156: static char command_chars[] = "\f qh?en#sdkriIuo";
157: #else
158: static char command_chars[] = "\f qh?en#sdkriIu";
159: #endif
160: /* these defines enumerate the "strchr"s of the commands in command_chars */
161: #define CMD_redraw 0
162: #define CMD_update 1
163: #define CMD_quit 2
164: #define CMD_help1 3
165: #define CMD_help2 4
166: #define CMD_OSLIMIT 4 /* terminals with OS can only handle commands */
167: #define CMD_errors 5 /* less than or equal to CMD_OSLIMIT */
168: #define CMD_number1 6
169: #define CMD_number2 7
170: #define CMD_delay 8
171: #define CMD_displays 9
172: #define CMD_kill 10
173: #define CMD_renice 11
174: #define CMD_idletog 12
175: #define CMD_idletog2 13
176: #define CMD_user 14
177: #ifdef ORDER
178: #define CMD_order 15
179: #endif
180:
181: /* set the buffer for stdout */
182: #ifdef DEBUG
183: setbuffer(stdout, NULL, 0);
184: #else
185: setbuffer(stdout, stdoutbuf, Buffersize);
186: #endif
187:
188: /* get our name */
189: if (argc > 0)
190: {
191: if ((myname = strrchr(argv[0], '/')) == 0)
192: {
193: myname = argv[0];
194: }
195: else
196: {
197: myname++;
198: }
199: }
200:
201: /* initialize some selection options */
202: ps.idle = Yes;
203: ps.system = No;
204: ps.uid = -1;
205: ps.command = NULL;
206:
207: /* get preset options from the environment */
208: if ((env_top = getenv("TOP")) != NULL)
209: {
210: av = preset_argv = argparse(env_top, &preset_argc);
211: ac = preset_argc;
212:
213: /* set the dummy argument to an explanatory message, in case
214: getopt encounters a bad argument */
215: preset_argv[0] = "while processing environment";
216: }
217:
218: /* process options */
219: do {
220: /* if we're done doing the presets, then process the real arguments */
221: if (preset_argc == 0)
222: {
223: ac = argc;
224: av = argv;
225:
226: /* this should keep getopt happy... */
227: optind = 1;
228: }
229:
1.3 aaron 230: while ((i = getopt(ac, av, "SIbinqus:d:U:o:")) != -1)
1.1 downsj 231: {
232: switch(i)
233: {
234: case 'u': /* toggle uid/username display */
235: do_unames = !do_unames;
236: break;
237:
238: case 'U': /* display only username's processes */
239: if ((ps.uid = userid(optarg)) == -1)
240: {
241: fprintf(stderr, "%s: unknown user\n", optarg);
242: exit(1);
243: }
244: break;
245:
246: case 'S': /* show system processes */
247: ps.system = !ps.system;
248: break;
249:
250: case 'I': /* show idle processes */
251: ps.idle = !ps.idle;
252: break;
253:
254: case 'i': /* go interactive regardless */
255: interactive = Yes;
256: break;
257:
258: case 'n': /* batch, or non-interactive */
259: case 'b':
260: interactive = No;
261: break;
262:
263: case 'd': /* number of displays to show */
264: if ((i = atoiwi(optarg)) == Invalid || i == 0)
265: {
266: fprintf(stderr,
267: "%s: warning: display count should be positive -- option ignored\n",
268: myname);
269: warnings++;
270: }
271: else
272: {
273: displays = i;
274: }
275: break;
276:
277: case 's':
278: {
1.6 deraadt 279: char *endp;
280:
281: delay = strtoul(optarg, &endp, 10);
282: if (delay < 0 || *endp != '\0')
283: {
1.1 downsj 284: fprintf(stderr,
285: "%s: warning: seconds delay should be non-negative -- using default\n",
286: myname);
287: delay = Default_DELAY;
288: warnings++;
1.6 deraadt 289: }
1.1 downsj 290: }
291: break;
292:
293: case 'q': /* be quick about it */
294: /* only allow this if user is really root */
295: if (getuid() == 0)
296: {
297: /* be very un-nice! */
298: (void) nice(-20);
299: }
300: else
301: {
302: fprintf(stderr,
303: "%s: warning: `-q' option can only be used by root\n",
304: myname);
305: warnings++;
306: }
307: break;
308:
309: case 'o': /* select sort order */
310: #ifdef ORDER
311: order_name = optarg;
312: #else
313: fprintf(stderr,
314: "%s: this platform does not support arbitrary ordering. Sorry.\n",
315: myname);
316: warnings++;
317: #endif
318: break;
319:
320: default:
321: fprintf(stderr, "\
322: Top version %s\n\
323: Usage: %s [-ISbinqu] [-d x] [-s x] [-o field] [-U username] [number]\n",
324: version_string(), myname);
325: exit(1);
326: }
327: }
328:
329: /* get count of top processes to display (if any) */
330: if (optind < ac)
331: {
332: if ((topn = atoiwi(av[optind])) == Invalid)
333: {
334: fprintf(stderr,
335: "%s: warning: process display count should be non-negative -- using default\n",
336: myname);
337: warnings++;
338: }
339: #if Default_TOPN == Infinity
340: else
341: {
342: topn_specified = Yes;
343: }
344: #endif
345: }
346:
347: /* tricky: remember old value of preset_argc & set preset_argc = 0 */
348: i = preset_argc;
349: preset_argc = 0;
350:
351: /* repeat only if we really did the preset arguments */
352: } while (i != 0);
353:
354: /* set constants for username/uid display correctly */
355: if (!do_unames)
356: {
357: uname_field = " UID ";
358: get_userid = itoa7;
359: }
360:
361: /* initialize the kernel memory interface */
362: if (machine_init(&statics) == -1)
363: {
364: exit(1);
365: }
366:
367: #ifdef ORDER
368: /* determine sorting order index, if necessary */
369: if (order_name != NULL)
370: {
371: if ((order_index = string_index(order_name, statics.order_names)) == -1)
372: {
373: char **pp;
374:
375: fprintf(stderr, "%s: '%s' is not a recognized sorting order.\n",
376: myname, order_name);
377: fprintf(stderr, "\tTry one of these:");
378: pp = statics.order_names;
379: while (*pp != NULL)
380: {
381: fprintf(stderr, " %s", *pp++);
382: }
383: fputc('\n', stderr);
384: exit(1);
385: }
386: }
387: #endif
388:
389: #ifdef no_initialization_needed
390: /* initialize the hashing stuff */
391: if (do_unames)
392: {
393: init_hash();
394: }
395: #endif
396:
397: /* initialize termcap */
398: init_termcap(interactive);
399:
400: /* get the string to use for the process area header */
401: header_text = format_header(uname_field);
402:
403: /* initialize display interface */
404: if ((max_topn = display_init(&statics)) == -1)
405: {
406: fprintf(stderr, "%s: can't allocate sufficient memory\n", myname);
407: exit(4);
408: }
409:
410: /* print warning if user requested more processes than we can display */
411: if (topn > max_topn)
412: {
413: fprintf(stderr,
414: "%s: warning: this terminal can only display %d processes.\n",
415: myname, max_topn);
416: warnings++;
417: }
418:
419: /* adjust for topn == Infinity */
420: if (topn == Infinity)
421: {
422: /*
423: * For smart terminals, infinity really means everything that can
424: * be displayed, or Largest.
425: * On dumb terminals, infinity means every process in the system!
426: * We only really want to do that if it was explicitly specified.
427: * This is always the case when "Default_TOPN != Infinity". But if
428: * topn wasn't explicitly specified and we are on a dumb terminal
429: * and the default is Infinity, then (and only then) we use
430: * "Nominal_TOPN" instead.
431: */
432: #if Default_TOPN == Infinity
433: topn = smart_terminal ? Largest :
434: (topn_specified ? Largest : Nominal_TOPN);
435: #else
436: topn = Largest;
437: #endif
438: }
439:
440: /* set header display accordingly */
441: display_header(topn > 0);
442:
443: /* determine interactive state */
444: if (interactive == Maybe)
445: {
446: interactive = smart_terminal;
447: }
448:
449: /* if # of displays not specified, fill it in */
450: if (displays == 0)
451: {
452: displays = smart_terminal ? Infinity : 1;
453: }
454:
1.10 ! millert 455: /* block interrupt signals while setting up the screen and the handlers */
! 456: sigemptyset(&mask);
! 457: sigaddset(&mask, SIGINT);
! 458: sigaddset(&mask, SIGQUIT);
! 459: sigaddset(&mask, SIGTSTP);
! 460: sigprocmask(SIG_BLOCK, &mask, &oldmask);
1.1 downsj 461: init_screen();
462: (void) signal(SIGINT, leave);
463: (void) signal(SIGQUIT, leave);
464: (void) signal(SIGTSTP, tstop);
465: #ifdef SIGWINCH
466: (void) signal(SIGWINCH, winch);
467: #endif
1.10 ! millert 468: sigprocmask(SIG_SETMASK, &oldmask, NULL);
1.1 downsj 469: if (warnings)
470: {
471: fputs("....", stderr);
472: fflush(stderr); /* why must I do this? */
473: sleep((unsigned)(3 * warnings));
474: fputc('\n', stderr);
475: }
476:
1.7 deraadt 477: restart:
1.1 downsj 478:
479: /*
480: * main loop -- repeat while display count is positive or while it
481: * indicates infinity (by being -1)
482: */
483:
484: while ((displays == -1) || (displays-- > 0))
485: {
486: /* get the current stats */
487: get_system_info(&system_info);
488:
489: /* get the current set of processes */
490: processes =
491: get_process_info(&system_info,
492: &ps,
493: #ifdef ORDER
494: proc_compares[order_index]);
495: #else
496: proc_compare);
497: #endif
498:
499: /* display the load averages */
500: (*d_loadave)(system_info.last_pid,
501: system_info.load_avg);
502:
503: /* display the current time */
504: /* this method of getting the time SHOULD be fairly portable */
505: time(&curr_time);
506: i_timeofday(&curr_time);
507:
508: /* display process state breakdown */
509: (*d_procstates)(system_info.p_total,
510: system_info.procstates);
511:
512: /* display the cpu state percentage breakdown */
513: if (dostates) /* but not the first time */
514: {
515: (*d_cpustates)(system_info.cpustates);
516: }
517: else
518: {
519: /* we'll do it next time */
520: if (smart_terminal)
521: {
522: z_cpustates();
523: }
524: else
525: {
1.9 deraadt 526: if (putchar('\n') == EOF)
527: exit(1);
1.1 downsj 528: }
529: dostates = Yes;
530: }
531:
532: /* display memory stats */
533: (*d_memory)(system_info.memory);
534:
535: /* handle message area */
536: (*d_message)();
537:
538: /* update the header area */
539: (*d_header)(header_text);
540:
541: if (topn > 0)
542: {
543: /* determine number of processes to actually display */
544: /* this number will be the smallest of: active processes,
545: number user requested, number current screen accomodates */
546: active_procs = system_info.p_active;
547: if (active_procs > topn)
548: {
549: active_procs = topn;
550: }
551: if (active_procs > max_topn)
552: {
553: active_procs = max_topn;
554: }
555:
556: /* now show the top "n" processes. */
557: for (i = 0; i < active_procs; i++)
558: {
559: (*d_process)(i, format_next_process(processes, get_userid));
560: }
561: }
562: else
563: {
564: i = 0;
565: }
566:
567: /* do end-screen processing */
568: u_endscreen(i);
569:
570: /* now, flush the output buffer */
571: fflush(stdout);
572:
573: /* only do the rest if we have more displays to show */
574: if (displays)
575: {
576: /* switch out for new display on smart terminals */
577: if (smart_terminal)
578: {
579: if (overstrike)
580: {
581: reset_display();
582: }
583: else
584: {
585: d_loadave = u_loadave;
586: d_procstates = u_procstates;
587: d_cpustates = u_cpustates;
588: d_memory = u_memory;
589: d_message = u_message;
590: d_header = u_header;
591: d_process = u_process;
592: }
593: }
594:
595: no_command = Yes;
596: if (!interactive)
597: {
598: /* set up alarm */
599: (void) signal(SIGALRM, onalrm);
600: (void) alarm((unsigned)delay);
601:
602: /* wait for the rest of it .... */
603: pause();
604: }
605: else while (no_command)
606: {
607: /* assume valid command unless told otherwise */
608: no_command = No;
609:
610: /* set up arguments for select with timeout */
611: FD_ZERO(&readfds);
612: FD_SET(1, &readfds); /* for standard input */
613: timeout.tv_sec = delay;
614: timeout.tv_usec = 0;
615:
1.7 deraadt 616: if (leaveflag) {
617: end_screen();
618: exit(0);
619: }
620:
621: if (tstopflag) {
622: /* move to the lower left */
623: end_screen();
624: fflush(stdout);
625:
626: /* default the signal handler action */
627: (void) signal(SIGTSTP, SIG_DFL);
628:
629: /* unblock the signal and send ourselves one */
1.10 ! millert 630: sigemptyset(&mask);
! 631: sigaddset(&mask, SIGTSTP);
! 632: sigprocmask(SIG_UNBLOCK, &mask, NULL);
1.7 deraadt 633: (void) kill(0, SIGTSTP);
634:
635: /* reset the signal handler */
636: (void) signal(SIGTSTP, tstop);
637:
638: /* reinit screen */
639: reinit_screen();
640: reset_display();
641: tstopflag = 0;
642: goto restart;
643: }
644:
645: if (winchflag) {
646: /* reascertain the screen dimensions */
647: get_screensize();
648:
649: /* tell display to resize */
650: max_topn = display_resize();
651:
652: /* reset the signal handler */
653: (void) signal(SIGWINCH, winch);
654:
655: reset_display();
656: winchflag = 0;
657: goto restart;
658: }
659:
1.1 downsj 660: /* wait for either input or the end of the delay period */
661: if (select(32, &readfds, (fd_set *)NULL, (fd_set *)NULL, &timeout) > 0)
662: {
663: int newval;
664: char *errmsg;
665:
666: /* something to read -- clear the message area first */
667: clear_message();
668:
669: /* now read it and convert to command strchr */
670: /* (use "change" as a temporary to hold strchr) */
671: (void) read(0, &ch, 1);
672: if ((iptr = strchr(command_chars, ch)) == NULL)
673: {
674: /* illegal command */
675: new_message(MT_standout, " Command not understood");
1.9 deraadt 676: if (putchar('\r') == EOF)
677: exit(1);
1.1 downsj 678: no_command = Yes;
679: }
680: else
681: {
682: change = iptr - command_chars;
683: if (overstrike && change > CMD_OSLIMIT)
684: {
685: /* error */
686: new_message(MT_standout,
687: " Command cannot be handled by this terminal");
1.9 deraadt 688: if (putchar('\r') == EOF)
689: exit(1);
1.1 downsj 690: no_command = Yes;
691: }
692: else switch(change)
693: {
694: case CMD_redraw: /* redraw screen */
695: reset_display();
696: break;
697:
698: case CMD_update: /* merely update display */
699: /* is the load average high? */
700: if (system_info.load_avg[0] > LoadMax)
701: {
702: /* yes, go home for visual feedback */
703: go_home();
704: fflush(stdout);
705: }
706: break;
707:
708: case CMD_quit: /* quit */
709: quit(0);
710: /*NOTREACHED*/
711: break;
712:
713: case CMD_help1: /* help */
714: case CMD_help2:
715: reset_display();
716: clear();
717: show_help();
718: standout("Hit any key to continue: ");
719: fflush(stdout);
720: (void) read(0, &ch, 1);
721: break;
722:
723: case CMD_errors: /* show errors */
724: if (error_count() == 0)
725: {
726: new_message(MT_standout,
727: " Currently no errors to report.");
1.9 deraadt 728: if (putchar('\r') == EOF)
729: exit(1);
1.1 downsj 730: no_command = Yes;
731: }
732: else
733: {
734: reset_display();
735: clear();
736: show_errors();
737: standout("Hit any key to continue: ");
738: fflush(stdout);
739: (void) read(0, &ch, 1);
740: }
741: break;
742:
743: case CMD_number1: /* new number */
744: case CMD_number2:
745: new_message(MT_standout,
746: "Number of processes to show: ");
747: newval = readline(tempbuf1, 8, Yes);
748: if (newval > -1)
749: {
750: if (newval > max_topn)
751: {
752: new_message(MT_standout | MT_delayed,
753: " This terminal can only display %d processes.",
754: max_topn);
1.9 deraadt 755: if (putchar('\r') == EOF)
756: exit(1);
1.1 downsj 757: }
758:
759: if (newval == 0)
760: {
761: /* inhibit the header */
762: display_header(No);
763: }
764: else if (newval > topn && topn == 0)
765: {
766: /* redraw the header */
767: display_header(Yes);
768: d_header = i_header;
769: }
770: topn = newval;
771: }
772: break;
773:
774: case CMD_delay: /* new seconds delay */
775: new_message(MT_standout, "Seconds to delay: ");
776: if ((i = readline(tempbuf1, 8, Yes)) > -1)
777: {
778: delay = i;
779: }
780: clear_message();
781: break;
782:
783: case CMD_displays: /* change display count */
784: new_message(MT_standout,
785: "Displays to show (currently %s): ",
786: displays == -1 ? "infinite" :
787: itoa(displays));
788: if ((i = readline(tempbuf1, 10, Yes)) > 0)
789: {
790: displays = i;
791: }
792: else if (i == 0)
793: {
794: quit(0);
795: }
796: clear_message();
797: break;
798:
799: case CMD_kill: /* kill program */
800: new_message(0, "kill ");
801: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
802: {
803: if ((errmsg = kill_procs(tempbuf2)) != NULL)
804: {
1.4 millert 805: new_message(MT_standout, "%s", errmsg);
1.9 deraadt 806: if (putchar('\r') == EOF)
807: exit(1);
1.1 downsj 808: no_command = Yes;
809: }
810: }
811: else
812: {
813: clear_message();
814: }
815: break;
816:
817: case CMD_renice: /* renice program */
818: new_message(0, "renice ");
819: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
820: {
821: if ((errmsg = renice_procs(tempbuf2)) != NULL)
822: {
1.4 millert 823: new_message(MT_standout, "%s", errmsg);
1.9 deraadt 824: if (putchar('\r') == EOF)
825: exit(1);
1.1 downsj 826: no_command = Yes;
827: }
828: }
829: else
830: {
831: clear_message();
832: }
833: break;
834:
835: case CMD_idletog:
836: case CMD_idletog2:
837: ps.idle = !ps.idle;
838: new_message(MT_standout | MT_delayed,
839: " %sisplaying idle processes.",
840: ps.idle ? "D" : "Not d");
1.9 deraadt 841: if (putchar('\r') == EOF)
842: exit(1);
1.1 downsj 843: break;
844:
845: case CMD_user:
846: new_message(MT_standout,
847: "Username to show: ");
848: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
849: {
850: if (tempbuf2[0] == '+' &&
851: tempbuf2[1] == '\0')
852: {
853: ps.uid = -1;
854: }
855: else if ((i = userid(tempbuf2)) == -1)
856: {
857: new_message(MT_standout,
858: " %s: unknown user", tempbuf2);
859: no_command = Yes;
860: }
861: else
862: {
863: ps.uid = i;
864: }
1.9 deraadt 865: if (putchar('\r') == EOF)
866: exit(1);
1.1 downsj 867: }
868: else
869: {
870: clear_message();
871: }
872: break;
873:
874: #ifdef ORDER
875: case CMD_order:
876: new_message(MT_standout,
877: "Order to sort: ");
878: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
879: {
880: if ((i = string_index(tempbuf2, statics.order_names)) == -1)
881: {
882: new_message(MT_standout,
883: " %s: unrecognized sorting order", tempbuf2);
884: no_command = Yes;
885: }
886: else
887: {
888: order_index = i;
889: }
1.9 deraadt 890: if (putchar('\r') == EOF)
891: exit(1);
1.1 downsj 892: }
893: else
894: {
895: clear_message();
896: }
897: break;
898: #endif
899:
900: default:
901: new_message(MT_standout, " BAD CASE IN SWITCH!");
1.9 deraadt 902: if (putchar('\r') == EOF)
903: exit(1);
1.1 downsj 904: }
905: }
906:
907: /* flush out stuff that may have been written */
908: fflush(stdout);
909: }
910: }
911: }
912: }
913:
914: quit(0);
915: /*NOTREACHED*/
1.8 pvalchev 916: return(0);
1.1 downsj 917: }
918:
919: /*
920: * reset_display() - reset all the display routine pointers so that entire
921: * screen will get redrawn.
922: */
923:
1.2 downsj 924: static void reset_display()
1.1 downsj 925:
926: {
927: d_loadave = i_loadave;
928: d_procstates = i_procstates;
929: d_cpustates = i_cpustates;
930: d_memory = i_memory;
931: d_message = i_message;
932: d_header = i_header;
933: d_process = i_process;
934: }
935:
936: /*
937: * signal handlers
938: */
939:
1.2 downsj 940: void leave(unused) /* exit under normal conditions -- INT handler */
941:
942: int unused;
1.1 downsj 943:
944: {
1.7 deraadt 945: leaveflag = 1;
1.1 downsj 946: }
947:
1.2 downsj 948: void tstop(i) /* SIGTSTP handler */
1.1 downsj 949:
950: int i;
951:
952: {
1.7 deraadt 953: tstopflag = 1;
1.1 downsj 954: }
955:
956: #ifdef SIGWINCH
1.2 downsj 957: void winch(i) /* SIGWINCH handler */
1.1 downsj 958:
959: int i;
960:
961: {
1.7 deraadt 962: winchflag = 1;
1.1 downsj 963: }
964: #endif
965:
966: void quit(status) /* exit under duress */
967:
968: int status;
969:
970: {
971: end_screen();
972: exit(status);
973: /*NOTREACHED*/
974: }
975:
1.2 downsj 976: void onalrm(unused) /* SIGALRM handler */
977:
978: int unused;
1.1 downsj 979:
980: {
981: /* this is only used in batch mode to break out of the pause() */
982: /* return; */
983: }
984: